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US 2010/0300889 A1Published application
Anodically assisted chemical etching of conductive polymers and polymer composites
AssigneeIntegran Technologies Inc.
InventorsJonathan McCrea, Konstantinos Panagiotopoulos, Herath Katugaha, Klaus Tomantschger
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Abstract
A novel activation/etch method is disclosed for conductive polymer substrates and conductive polymer composite substrates to achieve good adhesion to subsequently applied coatings. The method in a preferred case involves anodically polarizing conductive polymers/polymer composites in aqueous etching solutions.
Claims10
A process for providing an improved bond between a coating and a conductive substrate comprising a polymer and/or a polymer composite, said process comprising the steps of:
- (i) subjecting at least part of an outer surface of said substrate to anodic polarization in an aqueous solution for a period of time in the range of 25 seconds to 5 hours while applying a current density to the substrate in the range of 0.001 to 10 A/cm2 to activate said outer surface, and
- (ii) applying a metallic or non-metallic coating to at least part of said activated outer surface to provide a coated substrate.
Dependencies are inferred from the claim text.